Those of you looking to have more control over the functionality of your Camera Grabber on the lock screen should look into a new free jailbreak tweak called Grabber Enhancer by iOS developer GSquared.

With Grabber Enhancer, you can control whether or not the Camera Grabber even appears on the lock screen, and if you choose to have it on the lock screen, you can configure what the Camera Grabber will do. The options are configured via the Grabber Enhancer preferences pane in the Settings application:

The options Grabber Enhancer gives you for controlling what your Camera Grabber can do include:

Sliding up on the Camera Grabber to unlock the device

Tapping on the Camera Grabber to unlock the device

Sliding up on the Camera Grabber to open the Camera application

Users can also enable and disable the tweak on demand to revert any changes that they make on the fly. If you want to grab Grabber Enhancer, you'll find it for free in Cydia right now from the BigBoss repository.